Seiko Cal. 6678 - 196

This Automatic model from 1991 features a 36mm PVD Black case. Powered by the 6678 caliber with 31j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-99bcfcf9162b]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1991

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